Basic Example using Multilevel Inheritance in C++

In this program, there are three classes: A, B, and C. B inherits from A, and C inherits from B. This forms a chain of inheritance, with C inheriting from B and B inheriting from A. Each of the classes has a constructor, which is called when an object of that class is created. When an object of class C is created in the main function, the constructor of class A is called first, followed by the constructor of class B, and finally the constructor of class C.

Source Code

#include<iostream>
using namespace std;
class A
{
  public:
    A()
    {
      cout<<"Constructor of A class"<<endl;
    }
};
class B: public A
{
  public:
    B()
    {
      cout<<"Constructor of B class"<<endl;
    }
};
class C: public B
{
  public:
    C()
    {
      cout<<"Constructor of C class"<<endl;
    }
};
int main()
{
   C obj;
   return 0;
}

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Output

Constructor of A class
Constructor of B class
Constructor of C class

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